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Adding signals from two 33120A

Question asked by Luc on Dec 21, 2011
Latest reply on Dec 21, 2011 by Luc
There is an application note by Agilent, which describes how to add the signals from a waveform generator and a DC source, in order to get offsets up to 42 V (the limit for the 33120), by connecting them in series. In principle, this should work within the bandwidth of the DC source.
I tried this with two 33120 : one generating a sine, the other a DC voltage. The ac amplitude drops beyond about 100 kHz. Is this the limit from the 3310 bandwidth ?  

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